Shingle



6, 1923. LAL/7,750

C. S. BIRD SHINGLE Filed Mar. 5, `1920 I :J+1-venten 'MM N@ 551g ev Patented Mar. 6, i923. i

UNE

CHARLES S. BIRD, OF EAST WALPO-LE, MASSACHUSETTS.'

SHINGLE.

Application filed March 3, 1920. Serial No. 363,039.

To all -wLo-m, t may concern.'

Be it known that I, CHARLES S. BIRD, a citizen of theiUnited States, residing at East Walpole, in the county of Norfolk an'd State of Massachusetts, have invented certain new and useful Improvements in Shingles, of which the following is a specification.

This invention pertains to so-called felt or paper shingles, and has for one of its objects the rovision of means for preventing the shing es from adhering or sticking to one another when stacked or placed in bundles. The invention has for its further object the rendering of the under 4face of the shingle adjacent its lower edgewaterproof. Felt shingles as now commonly made are produced from felt stock cut to size and form and impregnated 4and coated with asphalt'um or similar material in orde-r to render them weather-resistant. Asphaltum is more or less stickyor tacky and when the shingles are stacked or placed in bundles the asphaltum coating which is sometimes applied to the urder face of the shingle causes the shingles to stick; together unless, perchance, the bundles are packedr` in wooden crates which relieves them of facewise pressure to a-considerable extent. Wooden crating, however, is too expensive to consider from a commercial point of view, and as a consequence the present invention has to deal with the treatment of the under face of the shingle with a waterproofing material which not only waterproofs the shingle but prevents the superimposed shingles. from adhering together when bound in bundles.

The invention is sought to be illustratedA in the annexed drawings, wherein,-

Fig. 1 is a perspective view of one ofthe shingles, as seen from the under side; and

Fig. 2 shows a plurality of shingles imposed one upon the other.

ln the drawing, l denotes the shingle body which may be of any form and composed of one or more layers of felt stock lor the like pressed together and impregnated with asphaltum or any other suitable weather-resistant material. rlhe shingle from the lower edge and upon its under face will have applied theretoa coating, as 2, of a non-sticky substance, and preferably of a waxy nature, such, for instance as Montan wax. rlhis coating is applied for a distancev of 4:11; inches, more or less, from the lower edge or butt toward the upper edge of the shingle and w1ll prevent that portion ofthe shingle from sticking to the next adjacent underlying shingle of the bundle. Such distance or extent is equal, 'or approximately so, to the exposed area of the shingles when laid.

Felt shingles as now commonly employed, are usually provided upon that face which is exposed when theshngles are laid, with a finish surface 3, formed from comminuted stone or rock, which is colored or has an inherent color, such material being forced into the face of the shingle and caused to adhere thereto by a suitable substance having a cementitious action. Such surface, or at least the portion thereof which is left exposed when the shingle is finally laid, must,

It is conceivable, of course, that the coating might be coextensive of the under face` of the shingle, but inasmuch as slight adhesion of that portion of the under face which is adjacent to the tip is not detrimental to the underlyingfshingle it is found expedient and economical not to coat the entire under face with the waxy substance but to apply such waxy coating transversely of the shingle a distance from the butt equal to or slightly exceedingA the area of the the underlying shingle of the bundle which is exposed when the same is laid. Another advantage which arises from the treatment as l,above set forth is that the presence of the waxy material renders the under face of the shingle more nearly waterproof than does the mere presence of the asphalturn or similar coating.' nasmuch as the water tends to creep upwardly between the overlapping portions of the shingles when lald, the preslence of this additional waterproong mateand having its under face coated from the butt toward the upper edge in part at least part of with a non-.sticky waxy material, the oppo- 4. As a new article of manufacture, a pasite face of the shingle having a finished per shingle having its under face treated surface of comminuted stone. with a coating of asphaltum and a layer of 3. As a new article of manufacture, a p a-` non-Stic Y waterproofing material imposed 5 per shingle having its under face treated upon suc asphaltum coating from the butt 15 with asphaltum and a coating of Montan toward the ,upper edge of the shingle.

wax imposed upon the asphaltum, said coat- In testimony whereof 1 have signed my ing extending fromthe butt of the shingle name to this specification,

toward the upper edge thereof but stopping 1`0 short of the upper edge. CHARLES S. BIRD. 

